植物王国
生命的基石

air
Plants take in carbon dioxide and make oxygen for humans and animals. Plants make 98% of the oxygen we breathe.
food
The world's food supply depends on about 150 plant species. Just 12 plant species provide three-quarters of the world's food.
water
Plants help clean water and reduce floods. A mature evergreen tree hold more than 15,000 liters of water per year, reducing(降低) the risk of flooding.
medicine
Some plants are useful as medicines. About 60% of the world's population relies on herbal medicines.
health
A study showed that indoor plants can reduce stress (压力). Plants can also help you stay focused and work efficiently.
阅读材料,选择合适的选项。
()1. What makes 98% of the oxygen we breathe?
A. Air. B. Plants. C. Water. D. Medicine.
()2. [词义猜测] What's the Chinese meaning of the underlined word "species"?
A. 成本 B. 一类人 C. 种类 D. 面包
()3. Which of the following statements is RIGHT?
A. World's food all comes from plants.
B. Plants can reduce floods.
C. All plants are useful as medicines.
D. Indoor plants aren't good for making your work efficient.
()4. [主旨大意] What's the best title for the passage?
A. Plants Can Provide Food B. We Should Save Water
C. Health Is Important D. Why Are Plants Important?
()5. [推理判断] Where can you read this passage?
A. In a dictionary. B. In a storybook.
C. In a science book. D. In a fashion magazine.

1. B 细节理解题。文章在“air”部分明确提到“Plants make 98% of the oxygen we breathe.(植物制造了98%的我们呼吸的氧气。)”。因此，植物是制造氧气的主体。
2. C 词义猜测题。文章在“food”部分提到“The world's food supply depends on about 150 plant species. Just 12 plant species provide three-quarters of the world's food.(世界的食物供应依赖于大约150种植物。仅仅12种植物提供了世界上四分之三的食物。)”。这里的“species”指的是植物的种类。
3. B 细节理解题。选项A错误，因为“Just 12 plant species provide three-quarters of the world's food.(仅仅12种植物提供了世界上四分之三的食物。)”，这表明并非所有食物都来自植物。B项正确，因为“Plants help clean water and reduce floods. A mature evergreen tree can hold more than 15,000 liters of water per year, reducing the risk of flooding.(植物有助于净化水并减少洪水。一棵成熟的常青树每年可以吸收超过15 000公升的水，降低洪水风险。)”。C项错误，因为“Some plants are useful as medicines.(一些植物可用作药物。)”，并非所有植物都可用作药物。D项错误，因为“A study showed that indoor plants can reduce stress. Plants can also help you stay focused and work efficiently.(一项研究表明，室内植物可以减轻压力。植物还能帮助你保持专注和高效工作。)”。
4. D 主旨大意题。文章整体介绍了植物在氧气供应、食物、水、药物和健康五个方面的重要性。因此，最佳标题应涵盖植物的多方面重要性。
5. C 推理判断题。文章内容涉及植物在生态系统中的科学作用，包括氧气制造、洪水控制、药物用途等，属于科学知识范畴，最可能出现在科学书中。